%0 Journal Article %A Bosetto, Elena %A Serra, Enrico %T A variational approach to chaotic dynamics in periodically forced nonlinear oscillators %J Annales de l'I.H.P. Analyse non linéaire %D 2000 %P 673-709 %V 17 %N 6 %I Gauthier-Villars %U http://www.numdam.org/item/AIHPC_2000__17_6_673_0/ %G en %F AIHPC_2000__17_6_673_0